John Callaghan, MD, PHD
NPI 1700825064 · Internal Medicine Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Callaghan, MD, PHD is a Internal Medicine Physician provider in Indianapolis, IN (NPI 1700825064).
Provider details
- NPI number
- 1700825064
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 01028895 (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1701 N Senate BlvdIndianapolis, IN 46202-1239Phone: (888) 484-3258
Registry dates
- Enumerated
- 2006-06-05
- Last updated
- 2025-03-04
- Certified
- 2025-03-04
Frequently asked questions
- What is John Callaghan's NPI number?
- John Callaghan's National Provider Identifier (NPI) is 1700825064, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Callaghan's specialty?
- John Callaghan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Callaghan located?
- John Callaghan's practice location on file with NPPES is 1481 W 10th St, Indianapolis, IN 46202-2803.
- What is John Callaghan's phone number?
- The practice phone number listed in the NPPES registry for John Callaghan is (317) 988-2624.
- Does John Callaghan accept Medicare?
- John Callaghan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Callaghan's NPI active?
- Yes — John Callaghan's NPI (1700825064) is active in the NPPES registry as of the last update on 2025-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.